Pools of floating crude oil at the site of the sunken Deepwater Horizon drilling rig, April 27, 2010.
Benjamin Lowy/Getty Images
The Deepwater Horizon disaster set new records for holding polluters to account. But it had much less impact on laws regulating offshore drilling or US oil dependence.
Oil sheen in a Louisiana marsh that was heavily affected by the 2010 BP spill, Sept. 27, 2013.
AP Photo/Gerald Herbert
The 2010 Deepwater Horizon spill caused widespread damage in the Gulf of Mexico, but some parts of this complex ecosystem fared better than others.
A satellite image of the oil slick as it looked in late May 2010, a month after the Deepwater Horizon well exploded. The oil plume looks grayish white.
NASA/Goddard/Jen Shoemaker and Stu Snodgrass
The BP Deepwater Horizon blowout on April 20, 2010 triggered the largest offshore oil spill in history. Ten years later, post-spill reforms are being undone and the Gulf of Mexico remains vulnerable.
A school of juvenile bocaccio in the midwaters of Platform Gilda, Santa Barbara Channel, Calif.
Californians love their coast and strongly oppose offshore drilling. Will they support converting old oil rigs to artificial reefs – a policy that benefits both marine life and oil companies?
Protesters at a hearing on President Donald Trump’s plan to allow offshore oil and gas drilling along most of the nation’s coastline, Feb. 14, 2018 in Hamilton, N.J.
AP Photo/Wayne Parry
The Trump administration plan to expand offshore oil and gas production along US coastlines faces serious roadblocks. But there are smarter ways to pursue 'energy dominance.'
A polar bear crosses ice In Alaska’s Chukchi Sea area, where a recent court ruling bars the Trump administration from greenlighting offshore drilling.
NOAA/OER/Hidden Ocean 2016:The Chukchi Borderlands
Can presidents undo decisions by their predecessors to protect federal lands from development? A recent court ruling on offshore drilling says no, and could also affect contested lands in Utah.
Oil sheen drifting from the site of the former Taylor Energy oil rig in the Gulf of Mexico.
AP Photo/Gerald Herbert, File
In 2004 an underwater avalanche destroyed an oil platform off Louisiana, causing a 14-year spill. An expert on oil and gas seeps in the Gulf of Mexico warns that this could happen in other places.
It's too soon for South Africa to start counting its chickens over the recent offshore gas find by global energy giant Total.
The scientific drilling ship JOIDES Resolution arrives in Honolulu after successful sea trials and testing of scientific and drilling equipment.
The ocean floor holds unique information about Earth's history. Scientific ocean drilling, which started 50 years ago, has yielded insights into climate change, geohazards and the key conditions for life.